Anti-fatigue mat



FIG. 1 is a front perspective view of the anti-fatigue mat showing my design.

FIG. 2 is a front view thereof;

FIG. 3 is a back thereof;

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

I claim the ornamental design for an anti-fatigue mat, as shown and described. 